Electromagnetic gun



Jan. 15, 1935. J. RADY ET AL ,9

ELECTROMAGNETIC GUN F iled Feb. 27. 1955 I/V VE/VTOPS.

BY mygew 20% Mwzm .jzu/z A TTORNEY Patented Jan. 15, 1 935 ELECTROMAGNETIC GUN w I r I otsep h Rady, ml M. Rally, and Charles R. Winn, Kansas City, Kans.

invention"relates to improvements" in electrome e v It is particularly .wel nection with tear gasjcartridges.

. jfO ey e je s f u jji eni ifi th provision of a novel gun of thekind d'es'cribed;

which is simple," "cheap," strongg durable, {not likely to get out Qfbr'der, which can be 'quickly fired} a'ndwhich is efiicient'in its operation. I

Another object of our invention is the p Vi;

sion ofjnov' 'meanfby which the cartridge-to be firedican'bepeas lyiand quickly inserted and firmly heldfanwwhicli after firing can be as readily removed.

The novel features of our invention are hereinafter fully described and. claimed.

In the accompanying drawing, which illustrates our invention in the preferred embodiment thereof,

Fig. 1 is a longitudinal central sectional view of our improved gun, showing a cartridge mounted therein, and the core with its firing pin retracted.

Fig. 2 is a section on the line 2--2 of Fig. 1.

Fig. 3 is a front end of our improved gun.

Fig. 4 is a rear end view of the same.

Similar characters of reference designate similar parts in the different views.

Our improved gun is provided with a support comprising a' cylindrical shell 1 in which is fitted a spool 2 to the front end of which is fastened by screws 3, or other suitable, means, a circular plate 4 having therethrough a central threaded hole 5 in which is removably fitted the rear externally threaded end of a forwardly extending barrel 6, adapted to have releasably inserted in its rear end, when the barrel is removed, a cartridge '7 having detonating means, such as a cap 8, at its rearend.

Fitted across the front end of the spool 2, and having at its periphery threaded removable engagement with the spooL is a breech block 9, disposed at the rear of the plate 4 and having a central hole therethrough adapted to receive the cap 8.

The barrel 6 at its rear end engages the forward side of the rim 11 'of the cartridge and holds the rear end of the cartridge against the breech block 9. t

Wound on the spool 2 is a solenoid winding 11, within the shell 1 and having its terminals 12' and 13' fastened to the binding posts 12 and 13 mounted on the rear end of the spool and extending through a plate 14 secured to said rear end by the binding post 13.

ApplicationlFebruaryZ'I, 1933, Serial No. 658,770 i o1ai .l '(o1.42-s4) ladapted for use in con 1 In the spool2 at the inner side of the plate 14 is fastenedby means of the binding'post 12 a resilient pad, preferably soft rubberf15 against which is adapted to bear the rearQend, of .a magnetizable core 16, 'which is reciproca-I- PATENT FICE,

tive, and has alrear portion of enlarged diameter" slidably fitted in the spool 2, and which co e normally held against and retracted to, said pad' V 15 by a coil'spring 1'7jin the. spool'2, the rear end of which spring bearsagainst said'enlarg'ed rear portion of the'co re 16, and the front end;

of which spring bears'against the rear Sid'lofj the breech block 9. The core 16 has "itsfront' portion of reduced diameter encircled by the spring 17.

The core 16 carries at its front end a firing pin 18, preferably integral with or rigidly fastened to the core in any suitable manner, and

which is adapted when the core is forced forthrough it from any suitable source connected in the usual manner to the binding posts 12 and 13, the winding 11 will be energized and will force the core forwardly to its firing position. When the current ceases to fiow through the winding 11, the spring 1'7 will force the core 16 to its retracted position.

The cartridge '7 when discharged, is removed by unscrewing the barrel 6 from the plate 4, and the discharged cartridge is replaced 'by a new cartridge, after which the barrel 6 is again screwed into the plate 4 so as to hold the new cartridge in its operative position.

By removing the screws 3 and the plate 4, the breech block 9 can be unscrewed from the spool 2 for access to the interior thereof, if desired. The disposition of the coil spring 1'? within the spool 2, forward of the core 16 and bearing against the inner side of the breech block 9; and the core 16, abutment 15, breech block 9 and plate 4 being located all within the spool 2, provide a self contained unitary structure from which there are no projecting movable parts. This construction also provides a compact mechanism having a minimum of length.

By having the protecting shell 1 fitted over the spool 2 and the rear end plate 14, and the terminals 12 and 13' of the winding extended through the rear end of the spool 2 and the plate 1%, the protecting shell may be readily slipped into or out of its operative position without disturbing the terminal connections of the winding 11, thereby affording a construction which can be easily and quickly assembled, or as easily and quickly disassembled for repair purposes.

By having the spring 17 encircling a front portion of the core 16 of reduced diameter; a maximum length of stroke for a given length of core and firing pin is afforded, and a relatively long spring can be employed without its superposed coils impeding the stroke.

By having the shell 1 removably, slidably fitted on the spool 2, and the latter fastened to the front plate 4 only by the screws 3, abur'ned out Winding 11 may be rewound on the 's'p'ool2 without the removal or disassemblage of any parts excepting the shell 1.

The binding posts 12 and 13, in additionto their usual functions, serve the double function or fastening thep'a'd 15 to the abutment plate 14, and holding the latterto the spool 2.

.Ihe location ofthe binding posts 12 and 13 within the Shelli, permits the removal of the later and replacing a burned out winding 11, without releasing or disassemblage of other parts.

, We do not limit our invention to the structure sho'wn'and described, as "many modifications, within the scope of the appended claims, may be made without departing from the spirit of our invention.

central hole for receiving therethrough said fir-- ing pin and in register with said opening, an abutment plate fastened to the rear end of said spool, a resilient pad in said spool bearing (against the front side of said abutment plate,

two binding posts respectively fastening said abutment plate to said spool and said pad to said abutment, plate, and respectively connected with the terminals of said winding, and'a @611 spring in said spool encircling said front portion of said core and bearing at-o'ne end against the front of said rear portion thereof and bearing at -its from end against said reech meek, and the tension of which spring ormal y forces said, core rearwardly, said viii-riding when energized forcii'ig said core forwardly to the firing position.

Jo'sEP'H RADY, J'Q NMQR D v CHARLES R.-WINN. 

